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Diverticulitis Club > Blog > Causes > What Triggers Diverticulitis Flare Ups?
Causes

What Triggers Diverticulitis Flare Ups?

Last updated: April 17, 2026 11:33 am
Last updated: April 17, 2026
3 Min Read
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What Triggers Diverticulitis Flare Ups?

Diverticulitis flare-ups can be triggered by various factors, although the exact causes and triggers can differ from person to person. Triggers include certain foods, stress and lifestyle factors all of which you can track in our free food and symptoms diary tracker.

Here are some common factors that can potentially contribute to and cause diverticulitis flare-ups:

Who knew stress could trigger a diverticulitis episode!

Diverticulitis sufferer

     

      • Inflammation or infection: Diverticulitis occurs when the diverticula (small, bulging pouches) in the colon become inflamed or infected. The presence of bacteria in the diverticula can lead to an immune response, resulting in inflammation and subsequent symptoms. Infections or inflammation in the digestive tract can trigger or worsen diverticulitis flare-ups.

      • Low-fiber diet: A diet low in fiber is often associated with an increased risk of diverticulitis and can potentially trigger flare-ups. Lack of dietary fiber can lead to constipation and harder stools, increasing pressure within the colon and potentially causing irritation to the diverticula.

      • Certain foods: While the relationship between specific foods and diverticulitis triggers is not fully established, some individuals may find that certain foods aggravate their symptoms or trigger flare-ups. Spicy foods, greasy or fried foods, highly processed foods, and foods high in sugar or refined carbohydrates might be potential triggers for some individuals.

    More Reading

    What Triggers Diverticulitis Flare Ups?


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        • Stress: Psychological stress can impact the body in various ways, including the digestive system. Stress may not directly cause diverticulitis, but it can potentially contribute to flare-ups or exacerbate symptoms. Managing stress levels through relaxation techniques, exercise, and proper self-care may help reduce the risk of flare-ups.

        • Lifestyle factors: Certain lifestyle factors can also contribute to diverticulitis flare-ups. These include a sedentary lifestyle, inadequate hydration, smoking, and excessive alcohol consumption. Engaging in regular physical activity, staying hydrated, quitting smoking, and moderating alcohol intake can be beneficial for overall digestive health and reducing the risk of flare-ups.

      It’s important to note that triggers can vary among individuals, and what may trigger symptoms in one person may not affect another. Keeping a symptom diary and identifying personal triggers can help individuals better manage their condition.

      If you have diverticulitis, it is recommended to consult with a healthcare professional for personalized guidance. They can provide specific recommendations tailored to your condition, identify potential triggers, and help develop a management plan to reduce the risk of flare-ups and promote overall well-being.

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      ByMark
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      After being diagnosed with diverticulitis over 10 years ago, I wanted to understand more about this disease from the people who live with it. Diverticulitis Club was created to provide member led coping strategies and allow connections with other real-world sufferers

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